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Zhangjiagang Huadian Import & Export Co., Ltd.
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Metric precision cold drawn seamless steel tubing|tube|tubes
Hi,this is maria,thanks very much for your interesting to our products,If you want such steel tubes and pipes,or the standard is not listed above,pls do not hesitate to contact me at once.pls tell me,it's my honor to service you!
Tel:+86-18921988727
Zhangjiagang Huadian Import & Export Co., Ltd is a company based in China, we have two factories, one factory manufactures steel tubes and the other factory produces power station equipment.
Jiangsu Dehai Group (Parent Company) | |
Zhangjiagang Huadian Im &Ex Co., Ltd (Subsidiary) | |
Zhangjiagang Huagang IndustrialCo.,Ltd (Factory)
| Specializes in the production of cold-drawn/cold-rolled precision seamless steel tubes,such as bright oil tubes etc. |
Zhangjiagang Huadian Power Equipment Co.,Ltd (Factory) | A manufacturer of power station boiler, industrial boiler, waste heat boiler, refusefired boiler, biomass boiler and the correlated pressure parts integrating the design, manufacture, installation, repair and maintenance |
Features
| Name | Metric precision cold drawn seamless steel tubing|tube|tubes |
| Standard | Meet or exceed ASTM,ASME,API,ANSI and DIN standards. ASTM A106/A179/A192/A210/A213/A519 etc. DIN2391/DIN17175/EN10305 etc GB8162/GB8163/GB3639 etc |
| Material | St35,St45,St52,E215,E235,E355,10,20, A106,A179,A192,A210,T11,T22,T12 etc |
| Size | Outer diameter:1/8'' to 48'' Length:max13400mm,generally 6000mm or so,can be cut shorter as per your need |
| Application | Cold drawn or cold rolled precision seamless steel tubes for hydraulic pressure and pneumatic services. Seamless steel pipes for low and medium pressure boiler, high pressure boiler, ship-building,Liquid service, petroleum cracking, chemical fertilizer equipment,Drawing-oil-equipment and structure purposes. |
| Business scope | DIN series cold drawn precision seamless steel tubes DIN series cold rolled precision seamless steel tubes Related coated and galvanized steel tubes Rustproof phosphyorylated tube |
| Main characteric | No Oxidation Layer on the outer and inner walls; No Leakage under high pressure; No Crake under flating and flattening; No distortion after cold bending; High precision high cleanness; Excellent brightness cold drawn and hot finished Superior performance for high pressure and temperature uses Black finish and hot dip galvanized Excellent corrosion resistance |
| Standard | Steel grade | Size |
| DIN2391 | St52 | O.D:3-114mm,W.T:0.5-10mm |
| EN10305-1 | E355 | O.D:3-114mm,W.T:0.5-10mm |
Delivery condition:NBK(DIN2391),+N(EN10305-1)
Tube length:random length or fix length as per customer request
Outside diameter and inside diameter according to DIN2391 or EN10305-1
Special diameter tolerance can be agreed on request
Tube surface protection:fully oiled to protect rust during shipment and storage
Tube surface:tubes shall be free from external and internal surface defects
| Steel grade | Tensile strength | Yield strength | Elongation | Delivery condition |
| St52 | 490-630MPa | 355MPa min | 22% min | NBK |
| E355 | 490-630MPa | 355MPa min | 22% min | +N |
Including seamless precision tubes in our product range manufactured to DIN 2391.
These tubes are supplied in a seamless cold drawn and normal annealed quality, marked by the code NBK.
The tubes can be delivered in either oiled finish or passivated finish.
The tubes are manufactured from St37.4 carbon steel with a fine quality according to DIN2391 and have the following material properties.
| Material | Tensile Strength Rm inN/mm2 | Yield Strength in N/mm2 | Elongation in % |
| ST37.4 | 350-480 | 235 for wall thickness less than or equal to 16mm | 25 |
Each tube is subjected to a non destructive material testing to detect faults and improperties.
Tubes are in fixed lengths of 6 metres and can be marked over the entire length according to DIN 2391.
This designation also serves as proof that the above mentioned tests have been carried out and replaces a test report according to EN10204.If required, customers can be supplied with an inspection certificate 3.1B according to EN10204.